Fluke 3540-FC Specifications

TECHNICAL DATA

Fluke 3540 FC Three-Phase
Power Monitor

The 3540 FC Three-Phase Power Monitor is a compact device to
monitor key electrical parameters at three-phase machinery (or
equipment) and stream data to the Fluke Connect® Cloud. The
measurement data is available on any connected device using
Fluke Connect mobile app or Fluke Connect® Condition Monitoring
software.

Graphs are available to show the trends and fluctuations of the
measurements during the monitoring period. Alarm settings notify
users immediately when measurement values are outside specified
thresholds.

Monitoring the electrical parameters like current and distortion
can reveal how the machinery (or equipment) is performing, for
example:

• A baseline current or load at a critical pump is trending dan-

gerously close to the motor’s maximum current rating, taking
service factor into account.

• The total power at an induction furnace appears to be fluctuat-

ing abnormally during a curing cycle.

• Determining how often a submersible or hydraulic pump is

cycling on/off to maintain flow or pressures, in some cases
simply validates their is power to the pump.

Immediate access to information about machinery performance
can be the difference between preventing a production stoppage.
Understanding a machines change in performance triggers the

THREE-PHASE MONITORING
AND STREAMING

Monitor three-phase systems and
stream data to the Fluke Connect Cloud

CONNECTED

The measurement data from the
Fluke Connect Cloud is available on
any connected device using the Fluke
Connect mobile app or Fluke Connect
Condition Monitoring software

EASY-TO-INSTALL AND MOVE

Powered from the measurement circuit,
configuration checker can automatically
correct connection errors

ALWAYS ON

The Monitor includes a mode to log
measurements when no connection to
the Fluke Connect Cloud is available

need to investigate further, the alternative is unknowingly letting
the machine run to fail.

Measurement:

• Single or three phase loads

• Voltage, Current and Frequency

• Power including Active Power (VA), Non-active power (var) and

Power Factor (PF)

• Total Harmonic Distortion (%)

The Monitor includes a mode to log measurements when no
connection to the Fluke Connect® Cloud is available. You can
transfer Logged data with the Fluke Connect mobile app.

The total number of measurements depends on the selected
topology (wiring configurations), like wye, delta, or split phase.

Specifications

General specifications

Color LCD display 4.3-inch active matrix color TFT, 480 pixels x 272 pixels, resistive touch panel

Warranty 3540 FC and built-in power supply 2 years (battery not included)

Accessories 1 year

Calibration cycle 2 years

Dimensions
(wxhxd)

Weight 3540 FC 1.1kg (2.5 lb)

Tamper protection Kensington lock

Environmental specifications

Operating temperature O °C to 45 °C (32 °F to 113 °F)

Storage temperature <20 °C to +60 °C (-4 °C to +140 °F),

Operating humidity <10 °C (<50 °F) non condensing

Operating altitude 2000 m (6,500 ft)

Storage altitude 12,000 m (39,000 ft)

IP rating IEC 60529:IP50, in connected condition with protection caps in place

Vibration MIL-T-28800E, Type 3, Class III, Style B

Safety

IEC 61010-1 IEC mains input Overvoltage Category II, Pollution Degree 2

IEC 61010-2- 0 33 CAT IV 600 V / CAT III 1000 V

Electromagnetic compatibility (EMC)

International IEC 61326-1: Industrial

Korea (KCC) Class A Equipment (Industrial Broadcasting & Communication Equipment)

USA (FCC) 47 CFR 15 subpart B. This product is considered an exempt device per clause

Wireless radio with adapter

Frequency range 2412 MHz to 2462 MHz

Output power <10 0 m W

3540 FC 19.8 cm x 16.7 cm x 5.5 cm (7.8 in x 6.6 in x 2.2 in)

Detachable power supply 13.0 cm x 13.0 cm x 4.5 cm (5.1 in x 5.1 in x 1.8 in)

3540 FC with power supply attached 19.8 cm x 16.7 cm x 9 cm (7.8 in x 6.6 in x 4.0 in)

Power Supply 400 g (0.9 lb)

with battery: -20 °C to +50 °C (-4 °F to +122 °F)

10 °C to 30 °C (50 °F to 86 °F) ≤95 %

30 °C to 40 °C (86 °F to 104 °F) ≤75 %

40 °C to 45 °C (104 °F to 113 °F) ≤45 %

(up to 4,000 m derate to 1000 V CAT II/600 V CAT III/300 V CAT IV)

Voltage terminals Overvoltage Category IV, Pollution Degree 2

15.10 3.

2 Fluke Corporation Fluke 3540 FC Three-Phase Power Monitor

Electrical specifications

Single and Three Phase Topologies

Wiring configurations 1-Φ, 1-Φ IT, Split phase, 3-Φ wye, 3-Φ wye IT, 3-Φ wye balanced, 3-Φ delta, 3-Φ Aron/Blondel

(2-element delta), 3-Φ delta open leg, 3-Φ high leg delta, 3-Φ delta balanced. Currents only (load
studies)

Voltage inputs

Number of inputs 4 (3 phases and neutral)

Maximum input voltage 1000 Vrms (1700 Vpk) phase to neutral

Input impedance 10 MΩ each phase to neutral

Bandwidth 42.5 Hz to 3.5 kHz

Scaling 1:1, variabl e

Current inputs

Number of inputs 3, mode selected automatically for attached sensor

Current sensor
output voltage

Clamp 500 mVrms / 50 mVrms; CF 2.8

Rogowski coil 150 mVrms/15 mVrms at 50 Hz, 180 mVrms/18 mVrms at 60 Hz; CF 4; all at nominal probe range

Bandwidth (-3 dB) 42.5 Hz to 3.5 kHz

Scaling 1:1 and variable

Data acquisition

Resolution 16-bit synchronous sampling

Sampling frequency 10.24 kHz at 50/60Hz, synchronized to mains frequency

Input signal frequency Mains 50/60 Hz (42.5 to 69 Hz)

Data storage Internal flash memory (not user replaceable)

Memory size Typical 1 offline logging session of 1 week with 1 second intervals. The number of possible

logging sessions and logging period depends on user requirements.

Measured parameters Voltage, current, frequency, THD V, THD A, power, power factor, fundamental power, DPF

Averaging interval 1 s

Total harmonic distortion THD for voltage and current is calculated on 25 harmonics

Calculated min/max values times

Voltage Full cycle RMS (20 ms at 50 Hz, 16.7 ms at 60 HZ)

Current Half cycle RMS (10 ms at 50 Hz, 8.3 ms at 60 Hz)

Power 200 ms

Interfaces

USB-A Firmware updates, max. supply current: 120 mA

WiFi

Supported modes Direct connection and connection to infrastructure

Security WPA2-AES with pre-shared key

Power supply

Voltage range nominal 100 V to 500 V (85 V min to 550 V max) using safety plug input

Mains power nominal 100 V to 240 V (85 V min to 265 V max) using IEC 60320 C7 input

Power consumption Maximum 50 VA (max. 15 VA when powered using IEC 60320 input)

Standby power <0.3 W only when powered using IEC 60320 input

Efficiency ≥ 68.2 % (in accordance with energy efficiency regulations)

Mains frequency 50/60 Hz ± 15 %

Battery power Li-ion 3.7 V, 9.25 Wh, customer-replaceable

On-battery runtime Up to 4 hr (up to 5.5 hr in energy saving mode)

Charging time <6 hr

3 Fluke Corporation Fluke 3540 FC Three-Phase Power Monitor

Accuracy at reference conditions

Parameter Range Accuracy

Max. resolution Intrinsic accuracy at reference conditions (% of reading + % of range)

Voltage 1000 V 0.1 V ± (0.2 % + 0.01 %)

Current

Direct input Rogowski Mode 15 mV 0.01 mV ± (0.3 % + 0.02 %)

150 mV 0.1 mV ± (0.3 % + 0.02 %)

Clamp Mode 50 mV 0.01 mV ± (0.2 % + 0.02 %)

500 mV 0 .1 mV ± (0.2 % + 0.02 %)

1500 A iFlex 150 A 0.01 A ± (1 % + 0.02 %)

150 0 A 0.1 A ± (1 % + 0.02 %)

3000 A iFlex 300 A 1 A ± (1.5 % + 0.03 %)

3000 A 10 A ± (1 % + 0.02 %)

6000 A iFlex 600 A 1 A ± (1.5 % + 0.03 %)

6000 A 10 A ± (1.5 % + 0.03 %)

i40s-EL 40 A 4 A 1 mA ± (0.7 % + 0.02 %)

40 A 10 mA ± (0.7 % + 0.02 %)

Frequency 42.5 Hz to 69 Hz 0.01 H z ± (0.1 %)

Voltage Min/Max 1000 V 0 .1 V ± (1 % + 0.1 %)

Current Min/Max defined by accessory defined by accessory ± (5 % + 0.2 %)

THD on voltage 1000 % 0.1 % ± (2.5 % ± 0.05 %)

THD on current 1000 % 0.1 % ± (2.5 % ± 0.05 %)

Power/Energy

Direct Input

1

iFle x15 0 0 -12 iFlex3000-24 iFlex6000-36 i40s-EL

Parameter Clamp: 50 mV/500 mV 15 0A/1500A 300A/3000A 600/6000A 4A /40A

Rogowski: 15 mV/150 mV

Power range W, VA,
var

Max. resolution W,

Clamp: 50 W/500 W 150 kW/1.5 MW 300 kW/3 MW 600 kW/6 MW 4 kW/40 kW

Rogowski: 15 W/150 W

0.1 W 0.01 kW/0.10 kW 1 kW/10 kW 1 kW/10 kW 1 W/10 W

VA, var

Max. resolution PF,
DPFfund.

Phase (voltage to
current) of range

1

Only for calibration laboratories

0.01

2.5 % of measured apparent power

± 0.2° ± 0.28° ± 1°

1

4 Fluke Corporation Fluke 3540 FC Three-Phase Power Monitor

iFlex probe specifications

Measuring range

iFle x 150 0 -12 1 A ac to 150 A ac /

10 A ac to 1500A ac

iFlex 3000-24 3 A ac to 300 A ac /

30 A ac to 3000A ac

iFlex 6000-36 6 A ac to 600 A ac /

60 A ac to 6000A ac

Nondestructive current 100 kA (50/60 Hz)

Intrinsic error at reference
condition

1

± 0.7 % of reading

Accuracy 3540 FC + iFlex

iFlex 1500-12 and iFlex 3000-24 ± (1 % of reading + 0.02 % of range)

iFlex 6000-36 ± (1.5 % of reading + 0.03 % of range)

Temperature Coefficient over operating temperature range

iFlex 1500-12 and iFlex 3000-24 0.05 % of reading / °C

(0.09 % of reading / °F)

iFlex 6000-36 0.1 % of reading / °C

(0.18 % of reading / °F)

Positioning error with position of conductor in the probe window

iFle x15 0 0 -12 ,

iFlex6000-36

iFlex3000-24

Probe
Window A

Probe
Window B

Probe
Window C

1/31/31/3

± (1 % of reading
+ 0.02 % of range)

± (1.5 % of reading
+ 0.02 % of range)

± (2.5 % of reading
+ 0.02 % of range)

C

± (1.5 % of reading
+ 0.03 % of range)

± (2.0 % of reading
+ 0.03 % of range)

± (4 % of reading
+ 0.03 % of range

B

Transducer length

iFle x 150 0 -12 305 mm (12 in)

iFlex 3000-24 610 mm (24 in)

iFlex 6000-36 915 mm (36 in)

Transducer cable

7.5 mm (0.3 in)

diameter

Minimum bending

38 mm (1.5 in)

radius

Output cable length

iFle x 150 0 -12 2 m (6.6 ft)

iFlex 3000-24 and

3 m (9.8 ft)

iFlex 6000-36

Weight

iFle x 150 0 -12 115 g (4 oz)

iFlex 3000-24 170 g (6 oz)

iFlex 6000-36 190 g (7 oz)

Material

Transducer cable TPR

Coupling POM + ABS/PC

Output cable TPR/PVC

Operating
temperature

-20 °C to +70 °C (-4 °F to 158°F)
temperature of conductor under
test shall not exceed 80 °C
(176 °F)

Storage
temperature

Operating relative

-40 °C to +80 °C
(-40 °F to 176 °F)

15 % to 85 % noncondensing

humidity

IP Rating IEC 60529:IP50

Operating altitude 2000 m (6,500 ft) up to 4000m

(13,000 ft) derate to 1000V
CATII / 600 V CAT III / 300 V
CATIV

Storage altitude 12 km (40,000 ft)

Warranty 1 year

A

iFlex1500-12: 88mm
iFlex3000-24: 185mm
iFlex6000-36: 282mm

Figure. iFlex Probe Window

iFlex probe specifications

External magnetic field rejection in reference to external

40 dB
current (with cable >100 mm from the head-coupling
and r-coil)

Phase shift < ± 0.5°

5 Fluke Corporation Fluke 3540 FC Three-Phase Power Monitor

Bandwidth 10 Hz to 23.5 kHz (probe only)

Frequency derating I x f ≤385 kA Hz

Working voltage 1000 V CAT III, 600 V CAT IV

1

Reference condition:

• Environmental: 23 °C ±5 °C, no external electrical/magnetic
field, RH 65 %

• Primary conductor in center position

Preventive maintenance simplified. Rework eliminated.

Save time and improve the reliability of your maintenance data by
wirelessly syncing measurements using the Fluke Connect® system.

• Eliminate data-entry errors by saving measurements directly from the
tool and associating them with the work order, report or asset record.

• Maximize uptime and make confident maintenance decisions with data
you can trust and trace.

• Access baseline, historical and current measurements by asset.

• Move away from clipboards, notebooks and multiple spreadsheets with

a wireless one-step measurement transfer.

• Share your measurement data using ShareLiveTM video calls and emails.

• The 3540 FC is part of a growing system of connected test tools and

equipment maintenance software. Visit the website to learn more about
the Fluke Connect® system.

Find out more at flukeconnect.com

Ordering information

FLUKE-3540 FC Three-Phase Power Monitor

Included

Instrument, power supply, voltage test leads,
dolphin clips (4x), 1500A flexible current
probe (3x), magnetic hanging kit, WiFi to USB
adapter, and color coding set

All t radema rks are the property of their respective owner s. WiF i or cellular serv ice req uir ed to sha re
data. Smartphone, w ireless ser vice and data plan not i nclude d with purchase. Fi rst 5 GB of storage is
free. P hone support det ails can be v iewed at f luke.com/phones.

Smart phone wireless service and data plan not included w ith purchase. Fluke Connect
is not available in all countries.

6 Fluke Corporation Fluke 3540 FC Three-Phase Power Monitor

Fluke. Keeping your world
up and running.

Fluke Corporation
PO Box 9090, Everett, WA 98206 U.S.A.

Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands

For more information call:
In the U.S.A. [phone] or
Fax [phone]
In Europe/M-East/Africa [phone] or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other countries [phone] or
Fax [phone]
Web access: http://www.fluke.com

©2016-2017 Fluke Corporation.
Specifications subject to change without notice.
9/2017 6008088d-en

Modification of this document is not permitted
without written permission from Fluke Corporation.

®